JP2019118111A - Reception method of receiver - Google Patents

Abstract

To provide a receiver and a reception method of a receiver according to an embodiment in which the display form for a user is devised in a case in which security communication is being performed and in a case in which security communication results in an error.SOLUTION: In a reception method of a receiver according to an embodiment, detection of the communication status of security communication based on transport layer security via a communication unit and execution of the security communication in a state in which a video signal is displayed on the full screen on the display when the communication status is that the security communication is being performed are caused to be displayed in a frame, and when the communication status is an error status of security communication and the error cause is in the receiver in the root certificate but verification with the server certificate of the connection destination cannot be performed, a predetermined message is superimposed on the full screen display.SELECTED DRAWING: Figure 5

Description

  Embodiments relate to a receiving method of a receiver.

  Recently, in the field of television broadcasting, various broadcasting systems have been developed, and are being transferred to actual operation through the stage of test broadcasting.

  For example, in addition to terrestrial digital television, BS digital, and wide band CS digital which are broadcast wave types, advanced BS digital and high wide band CS digital are expected to be used in the future.

  Furthermore, depending on the television receiver, it is possible to connect to the service provider via the Internet or the like and receive a service by the communication provider from the service provider.

JP, 2013-9334, A

ARIB TR-B39 1.0 version Revised on July 6, 2016, Japan Radio Industry Association ARIB STD-B62 1.6 version revised on September 29, 2016, Japan Radio Industry Association "Multi-media coding method in digital broadcasting (2nd generation)" ARIB STD-B 63 version 1.5 revised on March 25, 2016, Radio Industries Association of Japan

  The above-mentioned communication functions include various broadcast types, and in addition to video and audio services, services by data broadcasting and communication functions to provide various data by two-way communication have come to be added. When such a communication function is introduced into a broadcast system, various services are possible using the communication function, but there may be cases where confidentiality of transmission / reception data is required.

  For communication in such a case, rules relating to security in the data transmission scheme are also established as follows.

  In the service using the communication function, in the case of performing a service that requires consideration of transmission / reception of viewer information and fairness, a security function may be required.

  By the way, when security communication is carried out, there is also a demand for a means for making the viewer recognize that. For this reason, some receivers have a display function that displays, for example, an icon on a screen so that the viewer can understand the status when security communication is performed.

  However, when, for example, an icon is displayed on the screen just because security communication is being performed, there arises a problem that important display information can not be seen, and an image displayed on the screen is disturbed.

  However, on the other hand, depending on the state of important communication, it may be considered that it is better to actively notify the user when an error occurs.

Therefore, according to the present embodiment, a receiving unit that receives a broadcast wave including a video stream, an audio stream, and a data broadcast stream, and a content processing unit that processes the broadcast wave received by the receiving unit and outputs a video signal A reception method of a receiver comprising: a display control unit for displaying the video signal output by the content processing unit on a full screen of a display of a display; and a communication unit,
Detecting a communication state of security communication based on Transport Layer Security (TLS) via the communication unit;
If the communication state is that the security communication is being performed, the display that the video communication is being performed on the full screen on the display screen of the display, the display that the security communication is being performed is all the Displaying in a frame located around the display screen so as not to overlap the screen display;
If the communication state is a state in which an error has occurred during execution of the security communication, and the cause is that the root certificate is in the receiver but verification with the server certificate of the connection destination can not be made, This is a reception method of the receiver, including displaying the message “can not connect” because the safety of the connection destination can not be confirmed with the set root certificate on the full screen display.

FIG. 1 is a diagram showing an outline of a broadcast system to which an embodiment of the present invention is applied. FIG. 2A is a diagram schematically showing the main configuration of a broadcast station. FIG. 2B is a diagram showing an example of streams and data transmitted on a broadcast wave channel. FIG. 3A is a block diagram showing in detail the basic functional parts of the television receiver. FIG. 3B is a diagram illustrating a protocol stack included in the receiver. FIG. 4 is a diagram illustrating an example of functional blocks included in the control unit. FIG. 5 shows a normal state (FIG. 5A) in which an image is displayed on the screen of the display 172 and a notification state (FIG. 4B) when security communication is performed in the receiver of the embodiment. It is a figure which shows the example of). FIG. 6A is a diagram illustrating another example of a notification state when security communication is performed in the receiver of the embodiment. FIG. 6B is a diagram showing still another example of the notification state when security communication is performed in the receiver of the embodiment. FIG. 6C is a diagram showing yet another example of the notification state when security communication is performed in the receiver of the embodiment. FIG. 7 is a diagram showing still another example of the notification state on the display when security communication is performed in the receiver of the embodiment. FIG. 8 is a diagram showing still another example of the notification state on the display when security communication is performed in the receiver of the embodiment. FIG. 9A shows, in the receiver according to the embodiment, a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is performed (FIG. 9B). ) And another example of FIG. FIG. 9B shows, in the receiver according to the embodiment, a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is performed (FIG. 9B). And FIG. 14 is a diagram showing still another example of the above. FIG. 9C shows, in the receiver according to the embodiment, a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is performed (FIG. 9B). ) And another example of FIG. FIG. 9D shows, in the receiver according to the embodiment, a normal state in which an image is displayed on the screen of the display (FIG. 9A) and a notification state when security communication is performed (FIG. 9B). And FIG. 14 is a diagram showing still another example of the above. FIG. 10 is a diagram showing an example of a message output state on the display when an error occurs in security communication in the receiver of the embodiment. FIG. 11 is an example of an error generation factor when an error occurs in security communication and an example of an error message corresponding thereto in the receiver of the embodiment. FIG. 12 is a diagram illustrating an example of the structure of the logic plane of the receiver. FIG. 13 is an example showing a relationship between decoding of data received by the receiver 100 and creation of a presentation screen. FIG. 14 illustrates an example of control of the display position when the presentation screen is displayed on the display 50.

Embodiments will be described below with reference to the drawings. FIG. 1 shows an outline of a broadcast system to which an embodiment of the present invention is applied.
<Broadcast station 300>
The broadcast station 300 includes a broadcast station server 350 and a security 360. The broadcast station 300 may be a broadcast signal by radio wave (in this specification, any broadcast wave signal such as BS digital broadcast, broadband CS digital broadcast, advanced BS digital broadcast, advanced broadband CS digital broadcast, terrestrial digital television broadcast, etc.) may be used. Send out. The broadcast station 300 also sends out digital broadcast signals, application control information, control information on presentation, etc., and metadata on programs based on a contract to the service provider device (sometimes referred to as a service provider) 20. And video content can be provided.

  The application control information notifies an application or the like linked to a program to a receiver corresponding to the system, and includes a command for activation / termination, control information, and the like.

  Regarding the transmission method of the application control signal, for example, a transmission method by a dedicated ES (Elementary Stream), a data car cell (a transmission method for repeatedly transmitting the same data), a control signal file placed on a server of a communication network There is an acquisition method. A receiver for hybrid cast, which will be described later, acquires an application from a designated URL according to an instruction of the application control information, and executes control such as an application boundary.

  The broadcast station 300 operates the broadcast station server 350 in the present system. The broadcast station server 350 provides the receiver with metadata such as a program title, a program ID, a program summary, performers, broadcast date and time, and other data. The information that the broadcast station 300 provides to the service provider apparatus 20 is provided through an application programming interface (API) that the broadcast station server 350 comprises.

Also, the broadcasting station 300 can exchange data with the service provider device 20 of the hybrid cast specification. That is, the broadcast station 300 can provide the service provider apparatus 20 with metadata about a program, moving image content, and the like based on a contract.
<Service Agent Device 20>
The service provider device 20 includes a server 21 for each service and an application database 22. The service provider device 20 is used by the service provider to realize content for providing the service by communication via the network such as the Internet to the receiver 100, production / distribution of applications, and individual services. . Further, the service provider device 20 is also used when the service provider sells various services to the user and makes a contract. The service provider may be a broadcaster or a platform provider such as a VOD service.

  Moreover, the service agent apparatus 20 does not necessarily need to be limited to API, when accessed from the receiver 100 which is a user.

  The service provider device 20 can manage the application and distribute the application to the receiver 100. The server 21 for each service in the device has a server function for realizing individual services (for example, VOD program recommendation service), multilingual subtitle service, social TV service, and the like. The server 21 for each service not only realizes the functional aspect of the service, but also sends out contents (VOD content, subtitle data, etc.) constituting the service.

Also, the server 21 for each service comprises a repository. The repository is registered for distributing the application of this system, and can provide or search for a list of available applications in response to an inquiry from the receiver.
<Receiver 100>
The receiver 100 includes a parabola antenna for receiving a signal from a satellite (for BS digital broadcast or wideband CS digital broadcast), and a terrestrial antenna for receiving broadcast waves of a terrestrial digital television method. The receiver 100 can receive a broadcast signal sent from the broadcast station 300 and can receive various broadcast programs and various service information by broadcasting.

  The receiver 100 can also receive a service from the service provider 20 by communication via a network such as the Internet. The broadcast service and the communication service may be linked.

  A storage medium 31 for data recording and reproduction can be connected to the receiver 100, and a display 172 and a speaker system 174 can also be connected (these are also included in the receiver 100). is there).

The display 172 includes a display 50 which is an area for displaying an image, and a frame 51 disposed around the display 50 to fix the display 50.
<Mobile terminal 700>
The portable terminal 700 can perform mutual communication with the receiver 100 by the communication function. The portable terminal 700 can also perform mutual communication with the service provider device 20 by the communication function. The portable terminal 700 includes, for example, a smartphone, a tablet PC terminal, and the like.

  FIG. 2A schematically shows the main configuration of the broadcast station 300. As shown in FIG. The broadcast station 300 is an attached data generation unit that generates control data and service data such as a video encoder 301, an audio encoder 302, a subtitle encoder 303, and other transmission control signals, and application control information for controlling an application operated on the receiver side. And 304. Also, the broadcast station 300 cooperates with the broadcast station server 350, the security function 360, and the transmission / reception unit 313.

  The transmission control signal generated by the attached data generation unit 304 includes various information and programs specified for program selection, called program specific information (PSI) and program sequence information (SI: service information). It contains various information defined for the convenience of selection.

  The outputs of the video encoder 301, the audio encoder 302, the subtitle encoder 303, and the attached data generation unit 304 are streamed, and these streams are multiplexed in the multiplexing unit 305. The multiplexed stream (video stream, audio stream, data broadcast stream, application control information / service data / control data, etc.) is sent as a transport stream to the transmission unit 306, and transmitted from the antenna by broadcast radio waves.

  The codec type of the video encoder 301 is MPEG-2, H.264, or H.264. H.264 (AVC: Advance Video Coding), H.264. H.265 (HEVC: High Efficiency Video Coding) may be used, and codecs other than these may be used.

  FIG. 2B shows a broadcast wave transmission path 400 broadcasted from the broadcast station 300. As shown in FIG. As shown in FIG. 2B, the broadcast wave transmission path 400 is multiplexed with application control information / service data / control data in addition to contents such as a video stream, an audio stream, and a data broadcast stream.

  FIG. 3A is a block diagram showing in detail the basic functional units of the television receiver 100. As shown in FIG. The television receiver 100 includes a terrestrial digital tuner 101 for receiving terrestrial digital television broadcast, a BS tuner 102 for receiving BS digital broadcast, and a CS tuner 103 for receiving broadband CS digital broadcast. From the broadcasting station, application control information / service data / control data are multiplexed and transmitted via the above-described broadcast wave transmission path 400 in addition to contents such as video stream, audio stream, data broadcast stream and the like. Come.

  When a terrestrial digital television broadcast is received, the broadcast signal is received by the terrestrial digital tuner 101, and a stream of a channel selected from the received broadcast signal is input to the 2K decoder 121.

  When a BS digital broadcast is received, the broadcast signal is received by the BS tuner 102, and a stream of channels selected from the received broadcast signals is sent to the 2K decoder 131 or 4K decoder 132 or 8K decoder 133. It is input. As for the 8K decoder 133, there may be a case where a television receiver is not installed.

  When wideband CS digital broadcast is received, the broadcast signal is received by the CS tuner 103, and a stream of channels selected from among the received signals is input to the 2K decoder 141 or 4K decoder 142.

  The selector 150 displays the decoded output of the video and audio of any of the 2K decoder 121, 2K decoder 131, 4K decoder 132, 8K decoder 133, 2K decoder 141 or 4K decoder 142 on the display 172 or outputs it from the speaker 174 Switch the path for switching. The decoded output selected by the selector 150 is input to a content processing unit (including a video / audio / subtitle data processing unit) 160.

  The content processing unit 160 performs color adjustment, brightness adjustment, volume adjustment, subtitle display on / off control, and the like when processing content such as video signals, audio signals, subtitle data, and the like.

  The video signal output from the content processing unit 160 is subjected to gamma correction or the like suitable for the function and size of the display 172 having an 8K display capability, for example, in the display signal output unit 171, and output to the display 172. Further, the audio signal output from the content processing unit 160 is converted into an audio channel according to the audio system in the audio signal output unit 173, and is output to the speaker 174.

  Depending on the receiver (for example, a device not equipped with the 8K decoder 133), the display 172 having the ability to display up to 4K pixels may be mounted.

  The control unit 180 includes a network I / F 181, a portable terminal cooperation I / F 182, a remote controller I / F 183, an application control unit 184, and the like.

  The network I / F 181 is used when receiving service by communication of network service information, network distribution video, etc. via a network such as the Internet. The portable terminal cooperation I / F 182 is used, for example, when communicating with a portable terminal. The remote controller I / F 183 is used to receive various commands from the remote controller 200.

  The application control unit 184 performs overall control of processing related to a communication service. The application control unit 184 performs, for example, protocol control for receiving a communication service.

  Further, the control unit 180 controls the graphic user I / F (GUI) 191, and for example, a program guide, various messages, and a screen are used by the user via the graphic user I / F 191 and the display signal output unit 171. A user interface image for giving an operation input can be output.

  Furthermore, in the security communication described later, the control unit 180 determines the layout of the content of the display displayed on the display screen of the display 172 in order to notify the user of the communication status, for example, the display The security communication status can be displayed so as not to overlap the display content displayed on the display screen of the display 172, or a control signal for controlling an indicator provided on the frame of the display 172 can be output, for example. .

  Of course, the control unit 180 can generally control the functional states of various blocks in the receiver such as a tuner, a decoder, and a content processing unit 160.

  Further, in response to the operation of the remote controller 200, the control unit 180 controls each of the tuners, the decoders, the selectors 150, and the like described above, and executes channel selection determination of the channel to be viewed.

  The application engine 185 forms an environment for executing an application such as a browser. The application controlled by the application engine 185 is described in, for example, HTML5. The application engine 185 operates the application according to a protocol controlled by the application control unit 184, for example, control information acquired by HTTP, or operates the application according to the input operation from the user input via the GUI 191.

  FIG. 3B shows a protocol stack included in the receiver 100. The receiver 100 includes a protocol for implementing the broadcast function and a protocol for implementing the communication function. 3B1 is a protocol for realizing broadcasting. 3B2 is a protocol for realizing communication. The application control unit 184 controls a protocol required to receive a communication service.

  The portable terminal cooperation I / F 182 is an interface that executes cooperation with an external portable terminal.

  FIG. 4 is a diagram showing a configuration example in the control unit 180 of the receiving device.

  The various control units are not limited to the classifications shown in the figure, and various control units can be added or removed depending on the installed application. The illustrated example will be described.

  A security operation detection unit 180j detects that the security function is operating. The security operation detection unit 180 j cooperates with the protocol control performed by the application control unit 184 to detect whether or not security communication is set in the protocol control performed by the application control unit 184. When detecting that security communication is set in the protocol control performed by the application control unit 184, the security operation detection unit 180j notifies the display control unit 180k of a security operation detection notification.

  The security communication performed by the application control unit 184 is, for example, the case where https is set in the scheme (ARIB TR-B 39 version 1.0 third volume, chapter 6, communication operation Table 6-1). If https is set in the scheme, it is desirable to follow TLS 1.2 security, but other encrypted communication techniques may be used.

  Further, the security operation detection unit 180 j cooperates with the protocol control performed by the application control unit 184 to detect whether an error has occurred in the security communication performed by the application control unit 184. When detecting that an error has occurred in the security communication performed by the application control unit 184, the security operation detection unit 180j notifies the display control unit 180k of an error occurrence notification and an error cause.

  The display control unit 180k combines a video to be displayed on the basis of a service by broadcasting and a video to be displayed on the basis of a service by communication and the like, and displays it on the display 50 of the display unit 172 (ARIB STD-B 62.2 Control of the presentation function described in Further, in response to the security operation detection notification sent from the security detection unit 180j, the display control unit 180k causes the user (viewer) to display the video and the multimedia content in a full screen display. The display indicating that the security communication is being performed is performed so that the display that the security communication is being performed on the media content does not become as bad as possible.

  The display in which the security communication is being performed may be displayed on the display 50 of the display 172 or displayed on a frame 51 arranged around the display 50, as will be described later.

  Furthermore, the display control unit 180k is easy for the user to understand on the display 50 in response to an error occurrence notification and an error factor sent from the security operation detection unit 180j, and an error occurrence message (may be called an error message). It can be displayed.

  The control unit 180 further includes a service data analysis unit 180 w that receives and analyzes different service data, control data and the like different from the video and audio content.

  The control unit 180 further includes a tuner control unit 180s, a decoder control unit 180t, a content processing control unit 180u, and an output control unit 180v such as an audio output.

  The tuner control unit 180s operates to select or switch a tuner, or select or switch a channel. The decoder control unit 180t operates to select or switch various decoders. The content processing control unit 180 u outputs a control signal related to content (video, audio, subtitle display, etc.).

  Each output control unit 180v selects the output form of the audio signal (stereo output, monaural output, 5-channel output, etc.), and selects the output form of the video signal (8K, 4K, 2K output, frame frequency etc.) . Therefore, each output control unit 180v can be used to select type information (stereo, monaural, channel number, etc.) of the audio system, display capability information of the connected display (pixel number information such as 8K, 4K, 2K, etc., adaptive frame frequency Information etc.).

  In addition to the remote controller 200, the device for giving the operation input may be an operation button provided on a portable terminal or a housing of the receiver 100.

  Further, as described later, the display control unit 180k also includes an error notification unit when an error occurs during security communication. The error notification unit is easy for the user to understand on the display, and can display an error occurrence message (which may be referred to as an error message).

  In FIG. 5, the display 172 when the security operation detection unit 180j and the display control unit 180k are operated is shown by a visual line from the viewer. The example of FIG. 5 (a) shows a normal state in which the video 50p (multimedia plane) is displayed on the display 50 of the display 172 in the receiver 100, and FIG. 5 (b) is a receiver. An example of a state in which security communication is being performed is notified when security communication is being performed is shown. As shown in FIG. 5B, in this embodiment, a part of the frame 51 of the display 172 is provided with an indicator 52 including, for example, a plurality of light sources 52a, 52b,. Note that the indicator 52 is not limited in its name, and it may be a light source or a luminance capable of visually capturing a change in state. The plane will be described using FIGS. 12 to 14.

  The light sources 52a, 52b,... 52d are normally off, and when security communication is performed, the light sources 52a, 52b,. This allows the viewer to catch the change visually. When the light sources 52a, 52b,... 52d are sequentially turned on cyclically, the cyclic speed may be different depending on the type (for example, the degree of importance) of the security communication. The plurality of light sources may be different in color, and different colors may blink depending on the type (e.g., the degree of importance) of security communication.

  The number of light sources may be one, and is normally off, but may be flickering or lighting when security communication is performed.

  In the example of FIG. 5B, an indicator 52 (light sources 52a, 52b,... 52d) is provided on a part of the right side of the frame 51. However, the present invention is not limited to this place, and the position where the indicator 52 is provided may be selected to various positions such as the lower part of the frame 51, the upper part, the right part, and the corner. . The advantage of providing the indicator 52 in the frame 51 is that displaying the video or multimedia content displayed on the display and notifying that security communication is being performed may, for example, hide an advertisement display depending on the display content. There is a fear, and if it notifies out of the display 50, the problem can be solved.

  FIG. 6A shows another example of the notification state when security communication is being performed in the receiver of the embodiment. This example is an example in which the indicator 52 (light sources 52a, 52b, 52c) is disposed in a lower part of the frame 51, for example, in the central region on the left and right. Also in this example, the plurality of light sources may be different in color, and different colors may blink depending on the type of security communication (for example, the degree of importance). In this case, some users want to know that security communication is in progress, and it is desirable to arrange them in the most prominent position, that is, in the central region on the left and right. Ergonomically, it is also said that the human visual range is biased to the center of the display screen.

  FIG. 6B shows another example of the state in which security communication is being performed when security communication is being performed, in the receiver of the embodiment. This example is an example in which the indicator 52 (light sources 52a, 52b, 52c) is provided at a place different from the frame 51. For example, the indicator 52 may be disposed on a part of the stand 51s supporting the frame 51.

  Furthermore, the receiver 100 has a function to cooperate with the portable terminal 700 by mutual communication. Therefore, for example, the control signal may be transmitted to the portable terminal 700 (smart phone, tablet PC, etc.) registered in the receiver, and the indicator 52 may be displayed. The remote controller 200 may also be provided with an indicator 52. In this case, the remote controller 200 has a receiving function for communicating with the television receiver 100.

  FIG. 6C shows still another example of the state of performing notification during security communication when the security communication is being performed in the receiver of the embodiment. This example is another example in which the indicator 52 (the light sources 52a, 52b, 52c) is provided at a place different from the frame 51. For example, the indicator 52 may be disposed on the decoration 175 located below the frame 51. The decoration 175 is configured to include the speaker 174.

  FIG. 7 shows still another example of the notification state on the display when security communication is being performed in the receiver of the embodiment. In this example, a recess 53 is provided on an end surface (which may be referred to as a thickness surface) 51 b of the side portion of the frame 51, and a light source 52 x is provided on the bottom of the recess 53. In this configuration, when the light source 52x is turned on, the viewer recognizes as indirect lighting. Therefore, even when the light source 52x is turned on or blinks while the security communication is being performed, the viewer can be made to recognize it without being disturbed.

  This embodiment may be the end face of the side of the frame 51 if the user is not very interested in security communication and wants to be installed in an inconspicuous position. Further, any of the embodiments shown in FIGS. 6A to 6C and the embodiment shown in FIG. 7 may be selected at the time of initial setting. In the case where the indicator 52 is provided as in the case of indirect lighting, the present invention is not limited to the embodiment of FIG. 7, and it is needless to say that various modes can be implemented. For example, a plurality of light sources may be used, and the arrangement position of the indicator may be such that various positions can be selected.

  FIG. 8 shows still another example of the notification state on the display when security communication is being performed in the receiver 100 of the embodiment. In this example, a connector mechanism is provided on an end surface (which may be referred to as a thick surface) 51 b of the side portion of the frame 51. The plug 54 is inserted into the connector receptacle. Therefore, in this embodiment, a light source 52y such as an LED is provided to the plug 52y, and this is used as the indicator 52.

  9A shows that the receiver 100 according to the embodiment is in the normal state (FIG. 9A (a)) in which the video 50p (multimedia plane) is displayed in the entire area of the display 50 of the display 172 and security communication is performed. An example of a display notification state (FIG. 9A (b)) in which 50p (multimedia plane) is reduced on the display 50 is shown. As shown in FIG. 9A (b), in this embodiment, when security communication is being performed, the size of the video 50p (multimedia plane) is smaller than the size of the display 50, and the video 50p (multimedia) is displayed. The media plane is displayed on the display 50 without missing. The process of reducing the image 50p (multimedia plane) is displayed on the display 50 by the display control unit 180k in accordance with the security operation detection notification sent from the security operation detection unit 180j that detects that security communication is performed. It is implemented by controlling the size of the multimedia plane.

  When the image 50p (multimedia plane) is reduced and displayed on the area of the display 50, a remaining portion in which the image 50p (multimedia plane) is not displayed in the area of the display 50 is generated. This remaining portion is displayed in black, for example. A security related message 55 is displayed on the black display area via the GUI 191. For example, a display such as "I'm updating data now" is displayed.

  In the example of FIG. 9A (b) described above, black areas are generated at the top and bottom, right and left of the screen due to the reduction of the video 50p (multimedia plane), but the present invention is not limited to this. The black area may be prepared in any one of the upper and lower directions and the left and right directions of the screen, and a security related message may be displayed in this area.

  FIG. 9B shows the receiver 100 according to the embodiment in the normal state (FIG. 9B (a)) in which the video 50p (multimedia plane) is displayed over the entire area of the display 50 of the display 172 and security communication is performed. Fig. 9B shows another example of the display notification state (Fig. 9B (b)) in which 50p (multimedia plane) is reduced on the display 50. However, this example is an example in which a broadcast screen 50A by radio wave broadcast and a communication screen 50B by data broadcast are simultaneously displayed on the video 50p (multimedia plane). That is, the broadcast screen and the communication screen are simultaneously displayed. As shown in FIG. 9B (b), in this embodiment, when security communication is performed, the size of the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is reduced compared to the size of the display 50. In this state, the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is displayed on the display 50 without being dropped.

  When the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is reduced and displayed in the area of the display 50, the video (multimedia plane) of the broadcast screen 50A and the communication screen 50B is displayed in the area of the display 50. There is a residual part not displayed. This remaining portion is displayed in black, for example. A security related message 55 is displayed on the black display area via the GUI 191. For example, a display such as "I'm updating data now" is displayed. Also in this case, black areas are shown at the top, bottom, left and right of the screen, but the present invention is not limited to this. The black area may be prepared in any one of the upper and lower directions and the left and right directions of the screen, and a security related message may be displayed in this area.

  FIG. 9C shows the receiver 100 according to the embodiment in the normal state (FIG. 9C (a)) in which the video 50p (multimedia plane) is displayed in the entire area of the display 50 of the display 172 and security communication is performed. Fig. 9C shows still another example of the display notification state (Fig. 9C (b)) in which 50p (multimedia plane) is reduced on the display 50. This example is an example in which a broadcast screen 50A by radio wave broadcast and a communication screen 50B by data broadcast are simultaneously displayed on the video 50p (multimedia plane) as in FIG. 9B, but nothing is displayed on the display 50. This is an example in which a small area 50C exists. In the display layout on the display 50, when security communication is executed, as shown in FIG. 9C (b), the portion of the display 50C (black display area) without the broadcast screen 50A and the communication screen 50B being reduced. On the other hand, the security related message 55 is displayed via the GUI 191. For example, a display such as "I'm updating data now" is displayed.

  FIG. 9D shows that in the receiver according to the embodiment, security communication is performed when the video 50p (multimedia plane) is displayed in the remaining area of the display 50 of the display 172 (FIG. 9D (a)). It is a figure of the further another example which shows a display notification state (FIG. 9D (b)). This example is also an example in which a broadcast screen 50A by radio wave broadcast and a communication screen 50B by data broadcast are simultaneously displayed. That is, the broadcast screen and the communication screen are simultaneously displayed. Under such circumstances, when security communication starts, as shown in FIG. 9D (b), security communication is performed that indicator 52 provided on frame 51 arranged around display 50 May be displayed, or the indicator 52 provided on a stand or the like different from the frame 51 may be blinked and lighted to indicate that security communication is in progress.

  FIG. 10 shows an example of a message output state on the display when an error occurs in security communication in the receiver of the embodiment. If an error occurs in security communication, it is preferable to notify the user. Therefore, in this embodiment, when an error occurs, the error message 60 is displayed superimposed on the screen while the video and multimedia contents are displayed on the screen. Although the example of FIG. 10 shows the example of embodiment in FIG. 6 as embodiment which notifies a security communication state, any of embodiment shown in FIG.5, FIG.7, FIG.8 and FIG.9A-FIG. The display example of the error message 60 of FIG. 10 may be combined.

  In FIG. 10, the error message 60 is displayed in the lower area of the display 50, but is not limited to this area, and may be displayed in any area. Further, the message is not limited to a sentence, but may be an icon or the like as long as the viewer (user) can recognize the occurrence of an error.

  FIG. 11 shows an example of the cause of the error and an error message displayed on the display 50 when an error occurs in the security communication performed by the application control unit 184.

  FIG. 12 is a diagram illustrating an example of a logic plane configured by the receiver 100. The plane is a logical display screen configured by the display control unit 180k for displaying monomedia, multimedia, and the like on the display 50. In the plane, a character super plane for displaying a character super, a subtitle plane for displaying a subtitle, a multimedia plane for displaying a mono image alone such as broadcast video or a multimedia application, and a background for displaying a background color There is a plane.

  The receiver 100 creates each plane based on the data sent by broadcast or communication, and composes the created planes to configure a screen to be presented on the display 50.

  FIG. 13 is an example showing the relationship between decoding of data received by the receiver 100 and creation of a screen to be presented.

  The decoder control unit 180t performs separation processing on each stream 1301 received as a broadcast stream or a communication stream, and decoding processing is performed (1303). The data decoded by the decoder control unit 180t is sent to the display control unit 180k, and the display control unit 180k creates each plane based on the type of the sent data (1305). When creation of each plane is completed, the display control unit 180k performs a presentation process. The display control unit 180k configures a screen to be presented on the display 50 of the display 172 by performing presentation processing that changes the color gamut and dynamic range as necessary and performs combining.

  In order to display a screen to be presented on the display 50, the display control unit 180k designates a display position, which is a layout on the display, and displays the presentation screen on the display 50.

  FIG. 14 illustrates an example of control of the display position when the display control unit 180k displays the created screen to be presented on the display 50. FIG. 14A shows an example in which the display control unit 180k does not designate the display position of the screen presented. In this case, the presented screen created by the display control unit 180k is displayed over the entire area of the display 50. FIG. 14B shows an example in which the display position of the screen presented by the display control unit 180k is designated. The display position is a case where a rectangular area having (0, 0) and (5759, 3239) as diagonal vertices on the display 50 is designated as a coordinate system (physical coordinates). The area of the presented screen to be displayed in this display area is a rectangular area with (0, 0) and (7679, 4319) as diagonal vertices of the screen coordinate system (in-plane coordinates) of the presented screen. . That is, it is the entire area of the presentation screen. As a result, the entire area of the presented screen is displayed in a reduced size in a rectangular area having (0, 0) and (5759, 3239) in the coordinate system on the display 50 as diagonal vertices. The display area of the display 50 is (0, 0) to (7679, 4319) as a coordinate system on the display. The example of this reduced presentation screen corresponds to the example of FIG. 9A (b) and FIG. 9B (b).

  According to this embodiment, the characteristic parts can be summarized in various forms as follows. In the above embodiment, although it is described that TLS is adopted for security communication, the invention is not limited to this, and it is needless to say that other encryption techniques may be used.

According to this embodiment, a receiver including a video signal processing unit, a display, and a communication unit, wherein control for detecting security communication based on Transport Layer Security (TLS) via the communication unit is performed. Have a department,
When there is no error in the security communication, the control unit performs notification display notifying that a function related to security is operating, outside the display screen of the display.
(A00) A receiver including a video signal processing unit, a display, and a communication unit, and having a control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit And
The control unit
A receiver for performing notification display notifying that a function related to security is operating, in addition to the display screen of the display, when there is no error in the security communication.
(A11) A receiver including a video signal processing unit, a display, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit
If there is no error in the security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the screen of the display screen. A receiver, wherein the remaining portion is in the display area of the display in which the area has become a reduced display screen, and in the display area around the reduced display screen.
(A12) In the above-described A11, the display screen displays video by broadcast and / or multimedia content by data broadcast.
(A13) In the above-described A11, the display screen is configured of a plurality of overlapping planes, and images arranged in each plane are managed.
(B11) A receiver including an image signal processing unit, a display, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit
If there is no error in the security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the frame of the display And the receiver.
(B12) In the above-described B11, video and / or multimedia content by broadcast data is displayed on the display screen.
(B13) In the above-mentioned B11, the display screen is composed of a plurality of overlapping planes, and the video arranged in each plane is managed.
(C11) A receiver provided with a video signal processing unit, a display, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit
If there is no error in the security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the frame of the display And a different position from
Receiving machine.
(C12) In the above-described C11, the display screen displays video by broadcast and / or multimedia content by data broadcast.
(C13) Further, the display screen is composed of a plurality of overlapping planes, and the video arranged in each plane is managed.
(D21) A receiver including a video signal processing unit, a display, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit
If there is no error in the security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the screen of the display screen. In the display area of the display in which the area has become a reduced display screen, and the remaining part in the display area around the reduced display screen,
If there is an error in the security communication, a message indicating that an error has occurred is displayed superimposed on the display screen.
Receiving machine.
(D22) In the above-mentioned D21, video and / or multimedia contents by data broadcasting are displayed on the display screen.
(D23) Further, the display screen is composed of a plurality of overlapping planes, and the video arranged in each plane is managed.
(E21) A receiver including an image signal processing unit, a display, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit
If there is no error in the security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the frame of the display age,
If there is an error in the security communication, a message indicating that an error has occurred is displayed superimposed on the display screen.
Receiving machine.
(E22) In the above-mentioned E21, the display screen displays video by broadcast and / or multimedia content by data broadcast.
(E23) Further, the display screen is composed of a plurality of overlapping planes, and the video arranged in each plane is managed.
(F21) A receiver comprising a video signal processing unit, a display, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit
If there is no error in the security communication, a notification display notifying that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the display of the display. It is a different position from the frame,
If there is an error in the security communication, a message indicating that an error has occurred is displayed superimposed on the display screen.
Receiving machine.
(F22) In the above-mentioned F21, the display screen displays the video by broadcast and / or the multimedia content by data broadcast.
(F23) Further, the display screen is composed of a plurality of overlapping planes, and the video arranged in each plane is managed.
(G11) A receiver comprising a video signal processing unit, a display, and a communication unit,
A control unit for detecting security communication based on Transport Layer Security (TLS) via the communication unit;
The control unit
If there is no error in the security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the frame of the display And a receiver that is near the left and right center in the lower part of the frame.
(G12) In the above-mentioned G11, the display screen displays video by broadcast and / or multimedia content by data broadcast.
(G13) Further, the display screen is composed of a plurality of overlapping planes, and the video arranged in each plane is managed.
(H41) Also, the following can be subordinate to (A11) to (C12), and (D21) to (F22), and (G11).
(a) The frame is provided with a light source whose luminance changes as the display,
(b) The frame is provided with a light source whose color changes as the display,
(c) the light source is the left and right center of the lower part of the frame,
(d) a plurality of light sources are provided in the lower part of the frame,
(e) equipped with TLS 1.2,
(f) A communication using "https: ..." or the like may be combined or a plurality thereof.
(A11) A receiving method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtain security communication detection signal based on Transport Layer Security (TLS),
When responding to the security communication detection signal:
If there is no error in the security communication, a notification display notifying that the function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the screen of the display screen. In the display area of the display in which the area has become a reduced display screen, and the remaining part in the display area around the reduced display screen,
Receiver reception method.
(B11) A receiving method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtain security communication detection signal based on Transport Layer Security (TLS),
When responding to the security communication detection signal:
If there is no error in security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is:
Let the frame of the display,
Receiver reception method.
(C11) A receiving method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit;
When responding to the security communication detection signal:
If there is no error in the security communication, a notification display notifying that the function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the frame of the display And a different position from
Receiver reception method.
(D21) A receiving method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit;
When responding to the security communication detection signal:
If there is no error in the security communication, a notification display notifying that the function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the screen of the display screen. In the display area of the display in which the area has become a reduced display screen, and the remaining part in the display area around the reduced display screen,
If there is an error in the security communication, a message indicating that an error has occurred is displayed superimposed on the display screen.
Receiver reception method.
(E21) A receiving method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit;
When responding to the security communication detection signal:
If there is no error in security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is a frame of the display. ,
If there is an error in the security communication, a message indicating that an error has occurred is displayed superimposed on the display screen.
Receiver reception method.
(F21) A receiving method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit;
When responding to the security communication detection signal:
If there is no error in the security communication, a notification display notifying that the function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is the frame of the display And a different position from
If there is an error in the security communication, a message indicating that an error has occurred is displayed superimposed on the display screen.
Receiver reception method.
(G11) A receiving method of a receiver including a video signal processing unit, a display, a communication unit, and a control unit,
Obtaining a security communication detection signal based on Transport Layer Security (TLS) via the communication unit;
When responding to the security communication detection signal:
If there is no error in security communication, a notification display indicating that a function related to security is operating is displayed outside the display screen of the display, and the location of the notification display is a frame of the display. And near the right and left center of the lower part of the frame,
Receiver reception method.
<Further explanation about security>
In the service using the communication function, in the case of performing a service that requires consideration of transmission / reception of viewer information and fairness, a security function may be required. The security functions required at that time include (a) simple mutual authentication function, (b) information protection function, (c) tampering prevention function, and (d) simple proof function.
(A) Simple Mutual Authentication Function When using an application that requires privacy protection or confirmation of being an authorized viewer in communication, it is necessary to confirm the other party / connection destination connected in the initial stage of the transaction. The mutual (other party) authentication function is used as the means.

In mutual authentication, it is desirable to use the “text recovery method”.
Information sent to the center is desirable to transmit time stamps and random numbers from a one-way function in order to prevent a false viewer from impersonating by reusing the ID and password of the receiver.

  In the above-mentioned communication text recovery method, mutual authentication is also possible between the sender of information (communication) and the recipient of the information (communication). For the encryption, a card ID, a pseudo random number, and a time stamp are used, and the transmission side creates a message. In order to decipher this, the sender and the receiver need a common key. The common key possessed by the sender is encrypted and sent as a common key encryption to the receiver by a route different from the encrypted information (message).

When the sender / receiver (verifier) shares the common key in advance, it is effective to encrypt the message on the transmitting side using the common key and to decrypt the ciphertext by the receiver. If it is a certain message, the sender can be convinced. If a meaningful message can not be obtained, it means that there has been falsification or transmission error.
(B) Protection of information In a service using a communication function, there are cases where it is necessary for the service provider to grasp the viewer's name and address in order to specify the addressee like shopping. In a service using such a communication function, it is desirable to consider the following in order to prevent leakage of viewer information and the like from the viewpoint of privacy protection.
-Prevention of eavesdropping on the network-Prevention of leakage in the center-Prevention of entry to the center from the outside.
· Handle only the necessary personal data, and do not use or transfer it to another person without permission.
・ The functions and operations that the center should perform
In order to expand the content of the service, if you are forced to connect to other networks such as the Internet, install a firewall to prevent leakage of viewer information.
(C) Anti-tamper function It is desirable to have a function to detect that falsification has been performed if there is falsification in the communication path.
(D) Signing function If there is a transaction between money and goods (including digital content) such as shopping online, it is necessary to leave evidence of the transaction to prevent trouble. In such a case, it is ideal to use a digital signature, but since a digital signature can not be realized without implementing a public key encryption function, a message authenticator (also usable in a system implementing only a common key encryption) It is desirable to use MAC). However, although it can be sure that the signature result is not generated by a third party, the same message can be created by the signature receiver as well, so it does not have an effect on the omission of the center-side signature generator.

<Additional explanation about security>
In the communication transmission of multimedia service content, TLS is applied when the scheme is specified by "https:". It is assumed that the security algorithm in TLS is updated due to security issues and the like. Therefore, when the security algorithm is updated, it is necessary to be able to update the security algorithm operating in the browser by measures such as updating of the receiver software.

  The receiver is required to implement TLS 1.2 and have a mechanism to perform encrypted communication by Public Key Cryptography System (PKCS).

  When an error occurs in the security communication, it is necessary to display an error message shown in FIG. 11 to surely inform the user that the security communication can not be used. In addition, when an error occurs in security communication, implementation that does not execute communication is also possible.

  The root certificate used in the security communication needs to be able to use a certificate for performing encrypted communication by the public key cryptosystem (PKCS) in compliance with TLS 1.2 in the browser.

  In addition, it is desirable for the receiver to be equipped with a function to display the root certificate that can be used by the browser.

  It is assumed that new root certificate operations will be required due to root certificate expiration dates and security algorithm updates. Therefore, the new root certificate needs to be able to be added at the browser by the response of the receiver software update and the like.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

20: Service agent device
50 ... display,
50A ... broadcast screen,
50B ... communication screen,
51 ... frame,
52 ・ ・ ・ indicator,
100 ··· Television receiver,
101: Terrestrial digital tuner,
102: BS tuner,
103: CS tuner,
121, 131, 132, 133, 141, 142 ... decoders,
160: Content processing unit,
171: Display signal output unit,
172 ··· Display,
173: Audio signal output unit,
180 ... control unit,
180j ... security operation detection unit,
180 k ··· Display control unit,
185: Application engine,
186: terminal control unit,
191 ... GUI,
200 ... remote controller,
300 ... broadcast station 700 ... mobile terminal.

Claims (1)

A receiving unit that receives a broadcast wave including a video stream, an audio stream, and a data broadcast stream; a content processing unit that processes the broadcast wave received by the receiving unit and outputs a video signal; A reception control method of a receiver including a display control unit for displaying the video signal on a full screen of a display of the display unit, and a communication unit,
Detecting a communication state of security communication based on Transport Layer Security (TLS) via the communication unit;
If the communication state is that the security communication is being performed, the display that the video communication is being performed on the full screen on the display screen of the display, the display that the security communication is being performed is all the Display in a frame located around the display screen so as not to overlap the screen display,
If the communication state is a state in which an error has occurred during execution of the security communication, and the cause is that the root certificate is in the receiver but verification with the server certificate of the connection destination can not be made, "Can not connect because the safety of the connection destination can not be confirmed with the root certificate that has been set."
And a receiver reception method.

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